Corneal reshaping therapy (CRT), also known as orthokeratology (ortho-k), is a non-surgical procedure that uses specially designed contact lenses to reshape the cornea, the clear front part of the eye. This can improve vision and reduce the need for glasses or contact lenses during the day.
CRT lenses are worn overnight while the patient sleeps. During this time, the lenses gently apply pressure to the cornea, which causes it to change shape. This change in shape can improve vision by focusing light more accurately on the retina, the light-sensitive tissue at the back of the eye.
The effects of CRT can last for several days or even weeks, depending on the individual. Once the desired results are achieved, patients may only need to wear the lenses a few nights a week to maintain their vision.
CRT is a safe and effective way to improve vision. It is a good option for people who are looking for an alternative to glasses or contact lenses, or who are not good candidates for LASIK or other refractive surgery.
Here are some of the benefits of CRT:
- Improved vision
- Reduced need for glasses or contact lenses
- Increased comfort
- No surgery required
- Safe and effective
Here are some of the risks of CRT:
- Dry eyes
- Irritation
- Infection
- Corneal scarring
If you are considering CRT, it is important to talk to your eye doctor about the risks and benefits. They can help you decide if CRT is right for you.
Here are some additional information about CRT:
- CRT is a good option for people with mild to moderate nearsightedness (myopia) and astigmatism.
- CRT is not a good option for people with severe nearsightedness or astigmatism, or who have any eye diseases or conditions.
- CRT is not a permanent solution for vision correction. The effects of CRT will eventually wear off, and patients will need to start wearing glasses or contact lenses again.
- CRT is a relatively new procedure, and there is not a lot of long-term data on its safety and effectiveness.
If you are interested in learning more about CRT, talk to your eye doctor. They can help you decide if CRT is right for you.